BIOLOGICAL EFFECTIVENESS OF FUNGICIDES AGAINST WOODY PLANTS DISEASES WHEN INTRODUCED BY STEM INJECTION METHOD

UDC К 632.08;581.2;632.4

Blokh Valentina Gennadievna – Assistant Lecture, the Department of Landscape Design. Polessky State University (23, Dneprovskoy flotilii str., 225710, Pinsk, Republic of Belarus). E-mail: bloh.v@polessu.by Zviagintsev Viacheslav Borisovich − PhD (Biology), Associate Professor, the Department of Forest Protection and Wood Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: mycolog@tut.by

DOI: https://doi.org/ 10.52065/2519-402Х-2023-270-2-9.

Key words: stem injections, fungicides, assimilation apparatus, black spot, powdery mildew, dark brown spot, biological effectiveness.

For citation: : Blokh V. G., Zviagintsev V. B. Biological effectiveness of fungicides against woody plants diseases when introduced by stem injection method. Proceedings of BSTU, issue 1, Forest. Nature Management. Processing of Renewable Resources, 2023, no. 2 (270), pp. 67–75. DOI: 10.52065/2519- 402Х-2023-270-2-9 (In Russian).

Abstract

The article presents the results of a preliminary assessment of the possibility of suppressing complex fungal infections of woody plants in green spaces of great historical importance by stem injections of fungicides. Preparations containing thiophanate-methyl, cresol-methyl, flutriafol, tebuconazole as active ingredients were injected into the base of tree trunks of Norway maple (Acer platonoides L.), heartshaped linden (Tilia cordata Mill.) and large-leaved linden (Tilia platyphyllos Scop.) one age category in an ordinary type of landing. Biological efficacy was evaluated after 10 weeks on the example of powdery mildew (pathogen Uncinula aceris (DC.) Sacc.), black spot (pathogen Rhytisma acerinum (Pers.) Fr.) and dark brown spot (pathogen Cercospora microsora Sacc.) on the assimilation machine. It was revealed that the effectiveness of stem injections depends on the administered drug, the dose of the active substance, the disease, the degree of damage to the assimilation apparatus, the period of administration of the solution. The trend of variability in the effectiveness of injections along the height of protected plants was traced, which, apparently, is associated with the peculiarities of the distribution of the xylem current. The results obtained, taking into account a significant reduction in environmental risks due to the targeted administration of drugs, are proposed to be used as the basis for a detailed study of the possibility of using stem injections to increase the resistance of valuable old-growth trees and protect them from dangerous diseases.

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15.03.2023